LABCORP® FILES REGISTRATION STATEMENT TO ENABLE ROCHETO SELL UP TO 5.0 MILLION LABCORP® SHARES

Contact: 336-436-4855 Pamela Sherry Shareholder Direct: 800-LAB-0401 www.labcorp.com LABCORP(R) FILES REGISTRATION STATEMENT TO ENABLE ROCHE TO SELL UP TO 5.0 MILLION LABCORPÒ SHARES Burlington, NC, September 27, 2000 -- Laboratory Corporation of America(R) Holdings (NYSE: LH) (LabCorp(R))

LabCorp® Presents HIV Study Suggesting Frequently Monitored Patients Show Better Suppression of HIV Viral Load

Contact: 336-436-4855 Shareholder Direct: 800-LAB-0401 Pamela Sherry www.labcorp.com LabCorp(R) Presents HIV Study Suggesting Frequently Monitored Patients Show Better Suppression of HIV Viral Load LabCorp(R) releases the latest trends on HIV viral load to be presented at the Interscience

Laboratory Corporation of America® Signs Group Purchasing Agreement with HealthTrust Purchasing Group, L.P.

Contact: Pamela Sherry 336-436-4855 LABORATORY CORPORATION OF AMERICA® SIGNS GROUP PURCHASING AGREEMENT WITH HEALTHTRUST PURCHASING GROUP, L.P. Burlington, NC, August 24, 2000 — Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) today announced that it has signed a multi-year

LABORATORY CORPORATION OF AMERICA® COMPLETES ACQUISITION OFNATIONAL GENETICS INSTITUTE

Burlington, NC, August 1, 2000 — Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) today announced that it has completed the acquisition of Los Angeles-based National Genetics Institute, Inc. (NGI). Terms of the stock purchase transaction were not disclosed.

LABORATORY CORPORATION OF AMERICA® REPORTS RECORD SECOND QUARTER RESULTS ON STRONG VOLUME GROWTH

Burlington, NC, July 19, 2000 — Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) today announced significantly improved results for the quarter and six months ended June 30, 2000. Second Quarter Results Net sales for the second quarter were $482.4 million, operating income was

LABORATORY CORPORATION OF AMERICA® SUCCESSFULLY COMPLETES PREFERRED STOCK REDEMPTION

Burlington, NC, July 13, 2000 — Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) today announced that more than 99.97 percent of the shares of its outstanding 8½ percent Series A Convertible Exchangeable Preferred Stock and 8½ percent Series B Convertible Pay-in-Kind Preferred

LABCORP COMPLETES ACQUISITION OF PATHOLOGY MEDICAL LABORATORIES IN CALIFORNIA

Burlington, NC, June 27, 2000 — Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) today announced that it has completed its acquisition of the laboratory testing business of San Diego-based Pathology Medical Laboratories (PML). Terms of the acquisition were not disclosed.

LABORATORY CORPORATION OF AMERICA® ANNOUNCES DEFINITIVE AGREEMENT TO ACQUIRE NATIONAL GENETICS INSTITUTE

Burlington, NC, June 20, 2000 — Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) today announced that it has entered into a definitive agreement with privately-held National Genetics Institute, Inc. (NGI) to acquire all of the stock of NGI.

LABCORP TO PROVIDE CENTRALIZED LABORATORY SERVICES FOR CLINICAL TRIALS IN LATIN AMERICA

BURLINGTON, N.C., June 12, 2000 – The clinical trials testing division of Laboratory Corporation of America® Holdings (LabCorp®; NYSE: LH) can now support clinical trials in Latin America with routine safety testing through the company's standardized laboratory in Miami.

LABCORP OFFERS EXPANDED PHARMACOGENOMIC SERVICES

BURLINGTON, N.C., June 12, 2000 – The clinical trials testing division of Laboratory Corporation of America® Holdings (LabCorp®; NYSE: LH) is expanding its established genetic testing capabilities to offer pharmacogenomic services to pharmaceutical and biotechnology companies.